https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81356
Richard Earnshaw <rearnsha at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Status|UNCONFIRMED |NEW Last reconfirmed| |2017-07-08 Component|target |tree-optimization Ever confirmed|0 |1 --- Comment #1 from Richard Earnshaw <rearnsha at gcc dot gnu.org> --- Confirmed, but this should be done either as a tree optimization or in the builtin expansion. The back-end mem copying expansions can't know this is a null-terminated string.